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Combi boiler shower going cold

Discussion in 'Plumbing and Central Heating' started by Johnking, 13 Nov 2020.

  1. Johnking

    Johnking

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    The flow rate through my shower is a bit low, resulting in the boiler cutting out from time to time. The shower doesn't have a restrictor, but I wondered about trying to find a high flow shower head. Do they exist, will it work?

    (Boiler had diverter replaced, taps produce hot water fine, it's just the shower).
     
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  3. oilhead

    oilhead

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    Has it always been like that? Take off the shower head and see if it still stutters. Try descaling the head, otherwise. get a bigger head. The more holes, the more water will pass.
     
  4. Johnking

    Johnking

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    I've modified the head by breaking of the little rubber nipples that create each individual jet. Much more water flows and it seems better, but the jets have no oomph. Guess I need something between what I had and what I broke.
     
  5. gas112

    gas112

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    what boiler ?
     
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  6. CBW

    CBW

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    Check the shower hose for a restriction/collapsed inside
     
  7. terryplumb

    terryplumb

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    Check the filters in the showers inlets.
     
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  9. Johnking

    Johnking

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    It's an old Vailant Turbomax.
     
  10. Johnking

    Johnking

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    Do you mean remove the Grohe bar thermostat mixer and look at the H&C inlets? We do have very hard water.
     
  11. Johnking

    Johnking

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    No, not that, and i removed the restrictor before I fitted it.
     
  12. terryplumb

    terryplumb

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    Yes ,that's how to do it. The filters are within the bar mixers inlet ports.
     
  13. Take the shower head off..What is it like with hose alone?Sorry.been said
     
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